26028310560809 has 2 divisors, whose sum is σ = 26028310560810. Its totient is φ = 26028310560808.

The previous prime is 26028310560713. The next prime is 26028310560839. The reversal of 26028310560809 is 90806501382062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20100229955584 + 5928080605225 = 4483328^2 + 2434765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26028310560809 is a prime.

It is not a weakly prime, because it can be changed into another prime (26028310560839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13014155280404 + 13014155280405.

It is an arithmetic number, because the mean of its divisors is an integer number (13014155280405).

Almost surely, 2^{26028310560809} is an apocalyptic number.

It is an amenable number.

26028310560809 is a deficient number, since it is larger than the sum of its proper divisors (1).

26028310560809 is an equidigital number, since it uses as much as digits as its factorization.

26028310560809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 26028310560809 in words is "twenty-six trillion, twenty-eight billion, three hundred ten million, five hundred sixty thousand, eight hundred nine".